Marketaxess Holdings Inc
MKTX- Exchange
- Nasdaq
- Industry
- Security Brokers, Dealers & Flotation Companies
- SEC CIK
- 0001278021
In the last 90 days, Marketaxess Holdings Inc insiders filed 0 open-market purchases and 4 sales; 397 institutions reported holding it in 13F filings for Q2 2026, worth $4.44B in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Marketaxess Holdings Inc as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 452
- −27 vs. Q4 2025
- Shares held
- 38.2M
- +6.09M (+18.9%) vs. Q4 2025
- Total value
- $6.31B
- +$482.8M (+8.3%) vs. Q4 2025
- New holders
- 63
- 182 more added
- Sold out
- 90
- 150 more reduced
8 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MKTX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 397 | $4.44B |
| Q1 2026 | 452 | $6.31B |
| Q4 2025 | 487 | $6.62B |
| Q3 2025 | 452 | $6.21B |
| Q2 2025 | 531 | $8.24B |
| Q1 2025 | 511 | $8.05B |
| Q4 2024 | 519 | $8.51B |
| Q3 2024 | 511 | $9.42B |
| Q2 2024 | 468 | $7.48B |
| Q1 2024 | 463 | $8.14B |
| Q4 2023 | 506 | $10.9B |
| Q3 2023 | 485 | $7.98B |
| Q2 2023 | 514 | $9.88B |
| Q1 2023 | 540 | $14.5B |
| Q4 2022 | 500 | $10.3B |
| Q3 2022 | 479 | $8.19B |
| Q2 2022 | 505 | $9.28B |
| Q1 2022 | 506 | $12.4B |
| Q4 2021 | 505 | $15.0B |
| Q3 2021 | 508 | $15.3B |
| Q2 2021 | 551 | $16.8B |
| Q1 2021 | 589 | $17.7B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Marketaxess Holdings Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Northwest Wealth Management, LLC | 0 | $0 | 0.00% | −1,350−100.0% | Sold out |
| North Dakota State Investment Board | 0 | $0 | 0.00% | −1,298−100.0% | Sold out |
| Essex Financial Services, Inc. | 0 | $0 | 0.00% | −1,247−100.0% | Sold out |
| Poinciana Advisors Group, LLC | 0 | $0 | 0.00% | −1,206−100.0% | Sold out |
| Credit Capital Investments LLC | 0 | $0 | 0.00% | −1,200−100.0% | Sold out |
| Sage Rhino Capital LLC | 0 | $0 | 0.00% | −1,194−100.0% | Sold out |
| Truist Financial Corp | 0 | $0 | 0.00% | −1,143−100.0% | Sold out |
| RSM US Wealth Management LLC | 0 | $0 | 0.00% | −1,135−100.0% | Sold out |
| Sather Financial Group Inc | 0 | $0 | 0.00% | −1,129−100.0% | Sold out |
| PDS Planning, Inc | 0 | $0 | 0.00% | −1,128−100.0% | Sold out |
| Cetera Investment Advisers | 0 | $0 | 0.00% | −1,127−100.0% | Sold out |
| CSS LLC | 0 | $0 | 0.00% | −1,120−100.0% | Sold out |
| Claret Asset Management Corp | 0 | $0 | 0.00% | −1,116−100.0% | Sold out |
| Commonwealth Equity Services, LLC | 0 | $0 | 0.00% | −1,108−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −1,098−100.0% | Sold out |
| State of Wyoming | 0 | $0 | 0.00% | −421−100.0% | Sold out |
| Neo Ivy Capital Management | 0 | $0 | 0.00% | −321−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −298−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −259−100.0% | Sold out |
| Danske Bank A/S | 0 | $0 | 0.00% | −200−100.0% | Sold out |
| Ronald Blue Trust, Inc. | 0 | $0 | 0.00% | −181−100.0% | Sold out |
| Harbor Investment Advisory, LLC | 0 | $0 | 0.00% | −155−100.0% | Sold out |
| Rakuten Investment Management, Inc. | 0 | $0 | 0.00% | −150−100.0% | Sold out |
| V-Square Quantitative Management LLC | 0 | $0 | 0.00% | −111−100.0% | Sold out |
| NFJ Investment Group, LLC | 0 | $0 | 0.00% | −106−100.0% | Sold out |
| Onefund, LLC | 0 | $0 | 0.00% | −99−100.0% | Sold out |
| GoalVest Advisory LLC | 0 | $0 | 0.00% | −90−100.0% | Sold out |
| Roble, Belko & Company, Inc | 0 | $0 | 0.00% | −55−100.0% | Sold out |
| SageView Advisory Group, LLC | 0 | $0 | 0.00% | −44−100.0% | Sold out |
| Fideuram Asset Management (Ireland) dac | 0 | $0 | 0.00% | −33−100.0% | Sold out |
| West Branch Capital LLC | 0 | $0 | 0.00% | −34−100.0% | Sold out |
| TCTC Holdings, LLC | 0 | $0 | 0.00% | −26−100.0% | Sold out |
| Geneos Wealth Management Inc. | 0 | $0 | 0.00% | −25−100.0% | Sold out |
| Tucker Asset Management LLC | 0 | $0 | 0.00% | −11−100.0% | Sold out |
| Macquarie Group Ltd | 0 | $0 | 0.00% | −10−100.0% | Sold out |
| Cape Investment Advisory, Inc. | 0 | $0 | 0.00% | −8−100.0% | Sold out |
| UMA Financial Services, Inc. | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| Spire Wealth Management | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| Optima Capital LLC | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| Cullen/Frost Bankers, Inc. | 0 | $0 | 0.00% | −3−100.0% | Sold out |
| Wealth Watch Advisors, INC | 0 | $0 | 0.00% | −3−100.0% | Sold out |
| Creative Financial Designs Inc | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Norges Bank | – | – | – | – | Not filed |
| Comerica Bank | – | – | – | – | Not filed |
| QSV Equity Investors LLC | – | – | – | – | Not filed |
| CIBC Private Wealth Group, LLC | – | – | – | – | Not filed |
| Financial Advisory Corp | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |
| ORG Partners LLC | – | – | – | – | Not filed |